diff options
Diffstat (limited to 'kamon-core/src/main/scala/kamon/metric/instrument/MinMaxCounter.scala')
-rw-r--r-- | kamon-core/src/main/scala/kamon/metric/instrument/MinMaxCounter.scala | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/kamon-core/src/main/scala/kamon/metric/instrument/MinMaxCounter.scala b/kamon-core/src/main/scala/kamon/metric/instrument/MinMaxCounter.scala deleted file mode 100644 index 76fc2c2a..00000000 --- a/kamon-core/src/main/scala/kamon/metric/instrument/MinMaxCounter.scala +++ /dev/null @@ -1,105 +0,0 @@ -package kamon.metric.instrument - -/* - * ========================================================================================= - * Copyright © 2013-2014 the kamon project <http://kamon.io/> - * - * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file - * except in compliance with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software distributed under the - * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, - * either express or implied. See the License for the specific language governing permissions - * and limitations under the License. - * ========================================================================================= - */ - -import java.lang.Math.abs -import java.util.concurrent.atomic.AtomicReference -import akka.actor.Cancellable -import kamon.jsr166.LongMaxUpdater -import kamon.metric.instrument.Histogram.DynamicRange -import kamon.util.PaddedAtomicLong -import scala.concurrent.duration.FiniteDuration - -trait MinMaxCounter extends Instrument { - override type SnapshotType = Histogram.Snapshot - - def increment(): Unit - def increment(times: Long): Unit - def decrement(): Unit - def decrement(times: Long): Unit - def refreshValues(): Unit -} - -object MinMaxCounter { - - def apply(dynamicRange: DynamicRange, refreshInterval: FiniteDuration, scheduler: RefreshScheduler): MinMaxCounter = { - val underlyingHistogram = Histogram(dynamicRange) - val minMaxCounter = new PaddedMinMaxCounter(underlyingHistogram) - val refreshValuesSchedule = scheduler.schedule(refreshInterval, () ⇒ { - minMaxCounter.refreshValues() - }) - - minMaxCounter.refreshValuesSchedule.set(refreshValuesSchedule) - minMaxCounter - } - - def create(dynamicRange: DynamicRange, refreshInterval: FiniteDuration, scheduler: RefreshScheduler): MinMaxCounter = - apply(dynamicRange, refreshInterval, scheduler) - -} - -class PaddedMinMaxCounter(underlyingHistogram: Histogram) extends MinMaxCounter { - private val min = new LongMaxUpdater(0L) - private val max = new LongMaxUpdater(0L) - private val sum = new PaddedAtomicLong - val refreshValuesSchedule = new AtomicReference[Cancellable]() - - def increment(): Unit = increment(1L) - - def increment(times: Long): Unit = { - val currentValue = sum.addAndGet(times) - max.update(currentValue) - } - - def decrement(): Unit = decrement(1L) - - def decrement(times: Long): Unit = { - val currentValue = sum.addAndGet(-times) - min.update(-currentValue) - } - - def collect(context: CollectionContext): Histogram.Snapshot = { - refreshValues() - underlyingHistogram.collect(context) - } - - def cleanup: Unit = { - if (refreshValuesSchedule.get() != null) - refreshValuesSchedule.get().cancel() - } - - def refreshValues(): Unit = { - val currentValue = { - val value = sum.get() - if (value <= 0) 0 else value - } - - val currentMin = { - val rawMin = min.maxThenReset(-currentValue) - if (rawMin >= 0) - 0 - else - abs(rawMin) - } - - val currentMax = max.maxThenReset(currentValue) - - underlyingHistogram.record(currentValue) - underlyingHistogram.record(currentMin) - underlyingHistogram.record(currentMax) - } -} |